Intracapsular accommodation mechanism in terms of lens curvature gradient

Lockett-Ruiz, Veronica ; Navarro, Rafael ; López-Gil, Norberto

Resumen: The intracapsular accommodation mechanism (IAM) may be understood as an increase in the lens equivalent refractive index as the eye accommodates. Our goal was to evaluate the existence of an IAM by analysing observed changes in the inner curvature gradient of the lens. To this end, we fitted a gradient index and curvature lens model to published experimental data on external and nucleus geometry changes during accommodation. For each case analysed, we computed the refractive power and equivalent index for each accommodative state using a ray transfer matrix. All data sets showed an increase in the effective refractive index, indicating a positive IAM, which was stronger for older lenses. These results suggest a strong dependence of the lens equivalent refractive index on the inner curvature gradient.

Idioma: Inglés

DOI: 10.1111/opo.13271

Año: 2024

Publicado en: OPHTHALMIC AND PHYSIOLOGICAL OPTICS 44, 2 (2024), 334-346
ISSN: 0275-5408

Financiación: info:eu-repo/grantAgreement/EC/H2020/956720/EU/Opto-Biomechanical Eye Research Network/OBERON
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-107058RB-I00

Tipo y forma: Article (Published version)